Yes, everyone in Europe could see the lights. However, not everybody knew about the message from Fatima, so they all accepted the scientific explanation that it was a very, very large example of the Aurora Borealis. This, despite the fact that there had been NO coronal ejections or other examples of “space weather” that could have created such an aurora; that radio traffic had NOT been interrupted (which happens when the ionizing radiation that is required for an aurora hits the atmosphere); AND the light was diffuse, i.e., there were no “lines” or sections of color that are the hallmarks of the Aurora Borealis.
In many ways, it’s like the “lights in the sky” that were witnessed by the Magi announcing the birth of Jesus: The signs were all there, but the ones in the know (including the ones in Herod’s court) were either too unknowing or too unwilling to put all the signs together. Instead, it was these crazy guys from Parthia (whose role it was back in their home land to select the next king) who came saying, “We’ve read the signs; where’s this new king the heavens are proclaiming?” Their threat was more political than theological since, if the Messiah HAD been born, it would be given to G_D’s Chosen to read the signs, not these pagan goyim. Not many people today know about the Woman of Rev 12, and even fewer know about the astronomical event that will occur (unless, of course the NYT does a story about it in their “crazy people” section the Sunday before.)